navbar_draft_6.jpg (14851 bytes) hc problem green capsule.jpg (38949 bytes)The Problem of the Green Capsule
NY: Harper & Brothers (1939)
$2.00
286 pages
Copyright page:

5-9
FIRST EDITION
D-O

Back panel of DJ has blurbs for six Harper books. Panel #1450.
Orange cloth with green capsule on both spine and front cover, within which the lettering is orange.